Merge #4166

4166: Defining a default target to support cross-compilation targets  r=matklad a=FuriouZz

Related to #4163 

Co-authored-by: Christophe MASSOLIN <christophe.massolin@gmail.com>

crates/rust-analyzer/src/cli/load_cargo.rs

@@ -149,7 +149,7 @@ pub(crate) fn load(
 
     // FIXME: cfg options?
     let default_cfg_options = {
-        let mut opts = get_rustc_cfg_options();
+        let mut opts = get_rustc_cfg_options(None);
         opts.insert_atom("test".into());
         opts.insert_atom("debug_assertion".into());
         opts

crates/rust-analyzer/src/config.rs

@@ -131,6 +131,7 @@ impl Config {
         set(value, "/cargo/allFeatures", &mut self.cargo.all_features);
         set(value, "/cargo/features", &mut self.cargo.features);
         set(value, "/cargo/loadOutDirsFromCheck", &mut self.cargo.load_out_dirs_from_check);
+        set(value, "/cargo/target", &mut self.cargo.target);
 
         match get(value, "/procMacro/enable") {
             Some(true) => {

crates/rust-analyzer/src/world.rs

@@ -131,7 +131,7 @@ impl WorldState {
 
         // FIXME: Read default cfgs from config
         let default_cfg_options = {
-            let mut opts = get_rustc_cfg_options();
+            let mut opts = get_rustc_cfg_options(config.cargo.target.as_ref());
             opts.insert_atom("test".into());
             opts.insert_atom("debug_assertion".into());
             opts